Sole attaching apparatus



Feb, 3&5, Q.. l 'l1- LANCASTER B SOLE ATTACHING APPARATUS Filed Dec. 28,1934 5 Sheets--Sheel l Feb. 18, 1936. J, T.' LANCASTER SOLE ATTACHINGAPPARATUS Filed Dec. 28, 1934 3 Sheets-Sheet 2 Fig? 7 Feb' 181, 1935- J.T. LANCASTER SOLE ATTACHING APPARATUS Filed' Dec. 28, 1934 In llvlrunheist' Patented Feb. 18, 1936 UNITED STATES PATENT OFFIQE SOLE ATTACHINGAPPARATUS .Application December 28, 1934, Serial No. 759,545

.16 Claims.

'I'his invention relates to apparatus for attaching soles to shoes, andparticularly to improved means for holding down the welt or soleextension of a welt or other shoe having an extension edge sole, toprevent the extension from rolling up against the side of the shoe whenheavy pressure is applied to the sole, as inthe process of attaching itto a shoe by the cement method.

In the machines commonly employed for the cement attachment of soles toshoes there is a pressure pad arranged upon a support which usually isin the form of a pad box, combined with an overhead yoke or other meansfor sustaining a toe support and aheel supportingabut- Y ment forholding the lasted shoeagainst the pressure applied to the sole by thepad. In some machines the yoke is integral with the pad box and inothers it is separate and movable relatively tothe pad box.

It is an object of thepresent invention to provide an improved weltholddown which is applicable to sole attaching machines of varioustypes, regardless of whether the toe and 'heel supporting abutments arein fixed relationto Vthe pad box or not.

In the accomplishment of this object, a. feature of the .inventionconsists in the provision of a welt holddown sustained by the padsupport or box independently of the .pad boxyoke and of the heel and toesupports. In the embodiments -of the invention illustrated herein, thewelt hold down is sustained in operative position over the pad by abracket fixed to the side. of the pad box.

Another feature of the invention, particularly useful when an inflatable4pad is employed, consists inthe provision of -means for raising andlowering ythe holddown to permit it to be accommodated easily to theheight of the welt crease of a shoe upon the pad,.regardless of theposition of the so-le engaging surface of the pad.

Other features of improvement are to be recognized in various swingingand sliding movements of which the holddown apparatus iscapable in orderto facilitate accurate positioning of theholddown with respect to theshoe and connections whereby a plurality of :these movements may beeffected by manipulation of .a single handle. Y

Further novel features of improvement contributing to ease and accuracyin operation and uniformity in results will'be perceived andreadilyunderstood from reading Vthe following Vdetailed description of twoillustrative embodiments of the invention in connection with theaccompanying drawings, in which Fig. 1 is a side elevation of a pressunit equipped with the welt holddown apparatus;

Fig. 2 is a plan view of the same;V

Fig. 3 is an end elevation;

Fig. 4 is a sectional View, upon the line IV-IV a of Fig. 2, of a detailof the welt holddown operating mechanism;

Fig. 5 is a side elevation showing a modified form of the apparatus;

Fig. 6 is a plan view of the same;

Fig. l is `an end elevationof the same; and

Fig. 8 is a sectional detail, taken upon the line VIII-VIII of Fig. 5.

In the drawings I@ indicates the pad box of a press unit for cementattaching extension edge soles to shoes and I2 indicates an iniiatablepad, the admission of uid under pressure to vwhich is controlled by avalve I4. An overhead yoke I6 which is integral with the pad box IllVsustains a toe post I8 and a heel post 2i] at the lower ends of whichare a toe pad 22 and a plate 24 adapted respectively forengagement withthe toe portion of a shoe 26 and the cone of a last 28 in the shoe.'I'he structure described thus far is well known in the art.

In order to afford proper support for the projecting welt of a welt shoeor the projecting sole extension of an extension edge shoe of any type,and to apply suicient pressure to cause the welt and sole to besecurelyattached to each other and any tendency of the margin of the sole toroll upward to be eliminated, the welt holddown mechanism now to bedescribed is provided.

Bracket arms 3l), 32, extend upward from a plate 33 which is secured tothe side of the pad box I'by bolts 34 passing through slots 36 in theplate to permit the arms to be adjusted to their proper verticalpositions.k A hub 38 at the upper Y end vof the bracket'arm 32 is boredhorizontally to permit the passage of a bolt 40, the threaded end 42 ofwhich is screwed into a collar 44, the bolt and collar being freelyrotatable, abouty a horizontal axis, in the bore through the -hub 38.

A similar hub 46 at the upper end of the bracket arm 3i! is bored toreceive a stud 48 which is alined with the bolt 4D and supports theforward end of a cradle member 50 which is roughly U-shaped and has itsrear end portions secured to the collar 44 by bolts 52, 54 passingthrough holes in the ends of the cradle member and threaded into thecollar, as best seen in Fig. 2. Thus the cradle member 50 is suspendedupon the bolt 40 and the stud 48 for a limited amount of swingingmovement about a horizontal axis parallel to and 4above the longitudinalmedian line of the pad I2.

At its forward end the cradle member 50 is provided with a depending hubportion 56 having a vertical bore to permit the passage of a rod 58 inthe lower end of which a horizontal pin 60 is secured by a set screw 62.Pivotally supported upon the pin 68 is a clevis 64 into the under sideof which is screwed a Vertical stud 66 constituting a hinge pin for apair of welt supporting members 68, shaped to enter and conform to thewelt crease of the shoe. A compression spring 12 surrounding the rod 58tends to force it and the welt support downward, the tension upon thespring and the limit of downward movement of the rod and welt holddownbeing adjustably fixed by a nut 14 threadecl upon the upper end of therod 58.

The side portions of the two welt supporting members 68 and 1|J aresustained by similar arrangements of mechanism only one of 'which needbe described in detail. A vertical rod 16, similar to the rod 58, has ahorizontal threaded hole in its lower end portion to receive a screwstud 18 which passes through an upwardly extending ear 80 fastened tothe welt supporting member 10. The rod 16 is surrounded by a compressionspring 82 having the same function as the spring 12 which surrounds therod 58 and a nut 83 is threaded upon the upper end of the rod 16 for thesame purpose as the nut 14 upon the rod 58.

The rod 16 passes loosely through a vertical hole in a slide 84 whichhas a depending hub 86 to be mentioned presently. The slide 84 is guidedfor horizontal movement in a curved line by an arcuate slot 88 formed ina portion of the cradle member 50 and concentric with the axis of thescrew stud 66 about which the welt supporting member 10 swings. When themember 10 is swung about its pivot 66 the slide 04 travels freely in theguide slot 88 and carries the supporting rod 16 with it.

In order to effect swinging movement of the member 10 about its pivot,an arm 80 is pivoted upon a stud 92 screwed into a bracket 94 which isintegral with the cradle 50, the arm 90 being provided with an integralhandle 96 by which it may be swung in a horizontal plane about itspivot. The rear end of the arm is forked as shown at 98 and embraces areduced portion |00 of the hub 86 depending from the slide 84. It willbe apparent that when the arm 90 is swung by means ofthe handle 96 theslide 84 will be moved along the slot 88 and the welt supporting memberwill consequently be swung about its pivot 66 into or out of engagementwith the welt crease of the shoe.

In order that the other welt supporting member 68 shall swing insynchronism with the member 10, the arm |02, which moves it, is providedwith a gear segment |04 which meshes with a gear segment |06 upon thearm 90, causing the two arms always to move equally and oppositely.

In the use of the apparatus just described, the holddown is opened byswinging the handle 96 in a clockwise direction, as seen when lookingdown upon it, and the shoe, with the sole spotted upon it, is positionedunder the heel plate 24 and the toe pad 22, with the toe end of the shoein engagement with the welt supporting members. The holddown is thenclosed into the welt crease of the shoe by swinging the handle 96 in acounterclockwise direction and fluid under pressure is admitted to thepad I2 to cause the pad to apply pressure to the shoe. The strength ofthe springs 12. 82 is sufficient to cause the welt SupDOItUg members toapply the proper amount of pressure to the top of the welt, but topermit the holddown to yield upward in case the pressure should becomeexcessive. After the attachment of the sole to the shoe is complete, thepad is deiiated and the holddown opened to permit the shoe to beremoved.

The bolt and slot mounting 34, 36 permits the welt supporting mechanismas a whole to be adjusted up or down until it bears the proper relationto the pad, and the nuts 14, 83 permit further vertical adjustment ofthe toe and side portions of the welt supporting members independently,permitting them to be swung vertically to conform to the setting of theshoe in the press. The sidewise swinging movement permitted by themounting of the cradle 58 upon the bolt 40 and the stud 48 allows thewelt support to conform to sidewise tilting or displacement of the shoe.

In the modification illustrated in Figs. 5, 6, '7 and 8 the pad box I8,pad I2, valve I4, yoke I5, toe post I8, heel post 20, and toe pad 22 aresubstantially the same as those already described. In this case,however, the supporting bracket which is bolted to the side of the padbox by bolts ||0 has a single upwardly extending arm I2 and horizontalslots I| 4 permitting adjustment of the bracket lengthwise of the pad.

The upper end of the bracket arm ||2 isl formed to provide an elongatedhorizontal bearing ||6 in which is slidably fitted a shaft H8 preventedfrom rotation in the bearing by a spline |20 which is fitted looselyenough, as shown in dotted lines in Fig. 6, to permit a small degree ofoscillation of the shaft ||8 about its axis. A collar |22 pinned to theshaft ||8 at its outer end limits the sliding movement of the shafttoward the right as seen in Fig. 7. To the other end of the shaft ||8 ispinned a hub portion |24 of a housing member |26 which carries theentire welt supporting mechanism.

The housing |26 is bored out vertically and fitted with a bushing |28which is prevented from vertical movement by a screw |30 threadedthrough the Wall of the housing and having its point projecting into ahorizontal arcuate slot |32 cut in the wall of the bushing. The slotpermits the bushing to be oscillated through a limited angle about itsvertical axis while preventing vertical movement, as stated.

Fitted for vertical sliding movement in the bushing |28 is a sleeve |40splined to the bushing by a spline |42 so that the sleeve is constrainedto rotate with the bushing but can move up or down therethrough. Thesleeve extends upward from, and is integral with, a slide carrier |44which has a dovetail guide in its under face containing a horizontallymovable slide |46 upon which the welt support is carried.

A spindle |48, having at its lower end an enlarged head |50 upon whichthe slide carrier |44 is sustained, extends upward through the sleeve|40 and has pinned to its upper end a collar |52 provided with alaterally extending pin |54 surrounded by the rotatable shank |56 of aT-handle |58 which is retained upon the pin by a screw |68 whose pointengages in a groove at |62 near the outer end of the pin. The shank |56carries a cam |64 arranged to engage a vertically stationary shelf |66upon the housing |26 when the handle |58 is turned about its horizontalaxis. By thus turning the handle, causing the cam to engage the top ofthe shelf, the collar |52, the spindle |48 which is pinned to it, andthe slide carrier |44 sustained by the spindle' are 'raised or loweredasi-the. case. maybe..

By swinging: the' handle in a horizontal plane thewhole assembly isswung in one directionor the other about the vertical axis of thespindle |48Y between limits determined byY two ears |68` proijectingradially from the collarA |52 andl engageablealternatively with astationary stop pin |10 screwed into the housing |26;

An upright pin |12 screwed into the top of theslide |46 engages in aradial notch in the head |54!` andiserves to move the slidelongitudinally in the slideV carrier |44 when the spindle |48- is turnedby swinging the handle |58 to the right or left. A horizontal trunnion|14 is carried by the slide |46 and has a laterally projecting pin |16upon which pressure is exerted by a compression spring |13 tending tomove the trunnion rearward in the slide |46, toward the shoe.

Securedl tothe under side of the trunnion |14 by bolts |80 and |8| is across plate |82 in which are secured two vertical studs |84 constitutingpivots for a pair of actuating arms |86 which serve to open and closethe welt holddown relativelyto the shoe.

, support engage in slots |96 formed in the ends of the arms |86,causing the holddown to be opened or closed when the arms are swungabout their pivots |34.

Fixed to each long arm |86 is a short arm |88 against which bears acompression spring 200, the force of which tendsV to swing the arms |85outward. Disposed between the ends of the two short arms |08 is a wedgeshaped member 2|!2'whichY is secured to the slide |46 and movestherewith. When the slide is moved from its extreme left handl position,as viewed in Fig, 6, toward the right by turning the spindle |48, thewelt support is first carried lengthwise into contact with the toe ofthe shoe, whereupon it and the trunnion |14 which sustains it stop.Yielding of the spring |18 permits continued movement of the slide |46,forcing the double wedge 202 against the inner faces of the short arms|98 and swinging the long arms |86 inward to close the holddown membersinto the welt crease of the shoe. Rocking movementof the trunnions 14permits transverse rocking of the holddown to accommodate itself totransverse tilting of the shoe, twisting of the handle |58 about itshorizontal axis raises or lowers the holddown to adjust its height tothe vertical position of the welt crease of the shoe, looseness in thefitting of the spline |20 permits the holddown to swing about thehorizontal transverse axis of the shaft ||8 to adjust itself forvertical longitudinal tilting of the shoe, and the whole mechanism maybe slid bodily horizontally in the direction of the axis of the shaft||8 to accommodate it to the transverse position of the shoe upon thepad. All of these movements are accomplished either automatically or bymanipulation of the single handle 58.

The sections |92 of the welt supporting element are inclined on theoutside as shown at 204, Fig. 7, and when the pad |2 is inflated it willbulge up around the outside of the welt support, as at 206, holding thewelt supporting elements |92 tightly in the welt crease of the shoe and,indeed, tending to force them inward even more tightly than they havebeen forced by` swinging the handle |58. The result of this is that thewelt support is very rmly held in its operative position as soon as thepad is fully inflated,y andthe more highly the pad is inflated the morefirmly thewelt support is held, so that there is no necessity forholding it in manually after inflation ofthe pad.

Mounted upon the heel post 20 is a plate 208, the lower face of which iscorrugated as shown at 2|0. Slidably mounted upon bolts 2|2 passingthrough slots 2|4 in its upper portion is a last plate 216, the upperface of which is corrugated similarly to the face 2| 0 of the plate 208.The last plate slots 2li! are loose enough on the bolts 2| 2` to permita slight vertical movement of the plate, which carries a short pin 2|8adaptedto enter the usual pin hole 220 in the heel portion of the last28. As soon as pressure is applied by inflation of the pad l2, the lastplate B is automatically locked to the plate Zit' by engagement of thecorrugated surfaces of the two plates and the shoe is rmly held againstlongitudinal displacement by the thrust of the holddown against lthe toeend of the shoe. In the ordinary use of the apparatus the lasted shoemay be positioned upon the pad, with the pin 2i8 in the pin hole 220 inthe last, and the pad partially inflated, suiciently to cause the plate2|6 to be locked to the plate 2|0, before the handle |58 is swung toforce the holddown against the toe ofthe shoe and then to close it intothe welt crease. After the holddown has been accurately positioned andforced into the welt crease the inflation of the pad will be completed,whereupon, as stated above, the handle need no* longer be held.

Having described thev invention, what is claimed as new and desired tobe secured by Letters Patent is:

l. In a soleattaching apparatus, a pad support, a pad upon the support,a yoke sustained by the pad support, heel and toe supports sustained bythe yoke, and a welt holddown sustained by the pad support independentlyof the yoke and of the heel and toe supports.

2. In a sole attaching apparatus, a pressure pad, and a welt holddownsustained above the pad for transverse swinging movement about an axisextending longitudinally of a shoe upon the pad and disposedsubstantially above the sole of the shoe.

3. In a sole attaching apparatus, an expansible and contractible welt.holddown supported for swinging movement about an overhead horizontalaxis and a single handle member constructed and arranged both to eiTectsaid swinging movement and to expand and contract the holddown about ashoe.

4. In a sole attaching apparatus, a pressure pad adapted to support ashoe, and a welt holddown sustained above the pad, said welt holddownbeing supported for free swinging movement, within limits, aboutseparate horizontal axes extending transversely and longitudinally ofthe shoe.

5. In a sole attaching apparatus, a pressure pad adapted to support ashoe, and a welt holddown sustained above the pad, said welt holddownbeing supported for swinging movement about three separate axesextending, respectively, transversely, longitudinally and vertically ofthe shoe.

Y 6. In a sole attaching apparatus, welt holddown means comprising awelt supporting member mounted for swinging movement about an uprightaxis and for vertical movement in the direction of said axis, and asingle handle for effectlng both of said movements, each independentlyof the other.

7. In a sole attaching apparatus, a carrier, a welt holddown sustainedby the carrier, a vertically movable spindle upon which the carrier issupported, a handle rotatably secured to the spindle, a cam fixed to thehandle, and a stationary shelf arranged to be engaged by the cam,whereby rotation of the cam by turning the handle will raise or lowerthe spindle and the holddown.

8. In a sole attaching apparatus, a pressure pad adapted to support ashoe, and a welt holddown sustained above the pad, said welt holddownbeing supported for swinging movement about three separate axesextending, respectively, transversely, longitudinally and vertically ofthe shoe, and for sliding movement transversely, longitudinally andvertically of the shoe.

9. In a sole attaching apparatus, welt holddown means comprising acontractile welt holddown mounted upon a support which is slidablelongitudinally of the holddown, a slide in which said support is guided,and means carried by the slide for contracting the holddown when theslide is moved longitudinally relatively to the support.

l0. In a sole attaching apparatus, a pressure pad adapted to support ashoe, a contractile welt holddown sustained above the pad and movablelongitudinally thereof, and means for automatically contracting theholddown about a shoe upon the pad when it is forced against the toe endof the shoe.

1l. In a sole attaching apparatus, a pressure pad, a contractile weltholddown sustained above the pad, and a movable wedge cooperating withthe holddown to contract the latter when the wedge is moved.

12. In a sole attaching apparatus, welt holddown means comprising acontractile welt support mounted for vertical sliding movement, a handlemounted for both swinging and twisting movement, and connecting meansfor contracting the welt support when the handle is swung and raisingvor lowering the welt support when the handle is twisted.

13. In a sole attaching apparatus, an inflatable pressure pad adapted tosupport a lasted shoe, a welt holddown sustained above the pad andmovable longitudinally thereof into engagement with the shoe, a lastengaging member sustained above the pad and movable longitudinallythereof, and means for locking the last engaging member againstlongitudinal movement when pressure is applied to the shoe by inflationof the pad, whereby the shoe is held against displacement by the thrustof the holddown.

14. In a sole attaching apparatus, a pressure pad, a cradle sustainedabove the pad for transverse swinging movement about an axis extendinglongitudinally of a shoe upon the pad and disposed substantially abovethe sole of the shoe, and a welt holddown suspended from the cradle.

15. In a sole attaching apparatus, a pressure pad, a cradle sustainedupon coaxial pivots above the pad, the axis of the pivots being disposedlongitudinally of, and spaced a considerable distance above, the pad, awelt holddown suspended from the cradle, and springs interposed betweenthe holddown and the cradle to permit the holddown to yield upwardtoward the cradle.

16. In a sole attaching apparatus, a pressure pad, a cradle sustainedabove the pad for limited longitudinal swinging movement about an axisspaced a considerable distance above the pad and extending transverselythereof, a welt holddown suspended from the cradle and positioned nearthe pad, and springs interposed between the holddown and the cradle tpermit the holddown to yield upward toward the cradle.

JOHN T. LANCASTER.

DISCLAIMER 2,031 ,491.Join T. Lancaster, Newton, Mass. SOLE ATTACHINGAPPARATUS. Patent dated February 18, 1936. Disclaimer filed April 24,1937, by the assignee, United Shoe Machinery Corporation.

Hereby enters this disclaimer to claims 1 and 16 of said Letters Patent.[Oficial Gazette May 25, 19372]

